| 1 | /* |
| 2 | * Helpers for using D-Bus |
| 3 | * |
| 4 | * Copyright (C) 2019 Red Hat, Inc. |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2. See |
| 7 | * the COPYING file in the top-level directory. |
| 8 | */ |
| 9 | |
| 10 | #include "qemu/osdep.h" |
| 11 | #include "qemu/dbus.h" |
| 12 | #include "qemu/error-report.h" |
| 13 | #include "qapi/error.h" |
| 14 | |
| 15 | /* |
| 16 | * qemu_dbus_get_queued_owners() - return the list of queued unique names |
| 17 | * @connection: A GDBusConnection |
| 18 | * @name: a service name |
| 19 | * |
| 20 | * Return: a GStrv of unique names, or NULL on failure. |
| 21 | */ |
| 22 | GStrv |
| 23 | qemu_dbus_get_queued_owners(GDBusConnection *connection, const char *name, |
| 24 | Error **errp) |
| 25 | { |
| 26 | g_autoptr(GDBusProxy) proxy = NULL; |
| 27 | g_autoptr(GVariant) result = NULL; |
| 28 | g_autoptr(GVariant) child = NULL; |
| 29 | g_autoptr(GError) err = NULL; |
| 30 | |
| 31 | proxy = g_dbus_proxy_new_sync(connection, G_DBUS_PROXY_FLAGS_NONE, NULL, |
| 32 | "org.freedesktop.DBus", |
| 33 | "/org/freedesktop/DBus", |
| 34 | "org.freedesktop.DBus", |
| 35 | NULL, &err); |
| 36 | if (!proxy) { |
| 37 | error_setg(errp, "Failed to create DBus proxy: %s", err->message); |
| 38 | return NULL; |
| 39 | } |
| 40 | |
| 41 | result = g_dbus_proxy_call_sync(proxy, "ListQueuedOwners", |
| 42 | g_variant_new("(s)", name), |
| 43 | G_DBUS_CALL_FLAGS_NO_AUTO_START, |
| 44 | -1, NULL, &err); |
| 45 | if (!result) { |
| 46 | if (g_error_matches(err, |
| 47 | G_DBUS_ERROR, |
| 48 | G_DBUS_ERROR_NAME_HAS_NO_OWNER)) { |
| 49 | return g_new0(char *, 1); |
| 50 | } |
| 51 | error_setg(errp, "Failed to call ListQueuedOwners: %s", err->message); |
| 52 | return NULL; |
| 53 | } |
| 54 | |
| 55 | child = g_variant_get_child_value(result, 0); |
| 56 | return g_variant_dup_strv(child, NULL); |
| 57 | } |